What would prevent SFDC campaigns from showing in Marketo?

Is there something in the SFDC permissions that would need to allow for all marketing campaigns to show to Marketo? What exactly would be missing in the integration that would allow Marketo created SFDC campaigns show up, but no others?

I have a case open at this time with support, but I was wondering while I'm waiting to hear back from them if anyone else has run into this?